Measures to guarantee these three capabilities: - System and subsystems strictly complying to according standards. - Focus on Network Management System ( ROSA ), Subscriber Management System (SMS), CA System. - Modulated standard equipment + open software module design is a key insurance of smooth upgrade.

Focus: System, Efficiency and ReliabilityHow to ensure system Efficiency - Balance ‘backup’ and ‘efficiency’ . - Take resource utility rate of relative equipment into consideration from the beginning of equipment model selection stage. - Focus on management efficiency of overall system and centralized management.

How to ensure System Reliability - For common equipment in the system: pick industrial- class equipment provided by renowned manufacturers. - For sub business system: Hardware & software should be complying with reliability requirement. - Key factors: feasible environment, proper operation and management.